| Hyphochytrids | |
|---|---|
| Scientific classification | |
| Domain: | |
| (unranked): | |
| Superphylum: | |
| Phylum: | Hyphochytriomycota Whittaker, 1969[1] |
| Class: | Hyphochytriomycetes Sparrow ex M.W.Dick, 1983[2] |
| Subclass: | Hyphochytriomycetidae M.W.Dick, 2001[3] |
| Order: | Hyphochytriales Bessey, 1950[4] |
| Synonyms | |
| |
Hyphochytrids areeukaryotic organisms in the group ofStramenopiles (Heterokonta).
They are distinguished by an anterior tinsel flagellum[7] on theirzoospores. Also they have a rhizoidal or hypha-like vegetative system (hence the prefix "Hypho-").
This group may be put alternatively at the phylum, class, subclass or order level, being referred to as Hyphochytriomycota, Hyphochytriomycetes (or Hyphochytrea), Hyphochytriomycetidae (or Hyphochytridae) and Hyphochytriales, respectively. The variants Hyphochytridiomycota and Hyphochytridiomycetes are also sometimes used, presumably by analogy to the Chytridiomycetes, or due to the perpetuation of a typographical error. However, the stem is Hyphochytri- (fromHyphochytrium) and not Hyphochytridi- (fromChytridium).[8]
In the past the classes Hyphochytridiomycetes,Oomycetes andChytridiomycetes were grouped together in the now obsolete taxonMastigomycotina as fungi with flagellate spores or gametes. Now the Chytridiomycetes are still considered true fungi, but the other two sub-groups are classified in the kingdomProtista, or in the groupStramenopiles.
Hyphochytriomycetes are closely related toOomycetes.[9]
OrderHyphochytrialesBessey 1950 ex Sparrow 1960
This is a relatively small group, composed of about 16 known species, which may be due in part, to sampling methods of scientists.
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